Lamp-socket.



R. B. BENJAMIN. LAMP SOCKET.

APPLIOATION FILED APR.11, 1907. 987,690. I Patented Mar. 28, 1911.

3 SHEETS-SHBET 1 4 R. B. BENJAMIN.

LAMP SOGKBT. APPLIOAT'IOIMILED APR.11. 1901.

Patented Mar.28,1911.

3 SHEETS-SHEET 2.

R. B. BENJAMIN. LAMP SOCKET. APPLICATION FILED APR. 11, 1907.

Patented Mar. 28, 1911.

3 BHEETSSHEET 3.

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curios.

nriunnn BENJ'Ai/iiii, or CHICAGO, ILLINoIs,'-'AssIenon TO BENiAMIN'ELEcTRIc mnprac'runme contains, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

fsilo'eo.

Tfrd'll whom 'it mayconcem:

,.,Be it known that I, REUBEN B. BENJAMIN, a citizen of" the United States, residing at Chicago, in the county of Cook a nd State of provements in Lamp-Sockets, of which'the description; reference being hadvto the acompan'ying drawing, forminga part of this specifications? I Y.

, This inventionrelates to improvements in ticularly to atype ofisuch socket which is their akes dispose'tl in a common plane.-

Orient-the objects of this invention is the tec ted fronithe access of moisture thereto. 7 Another object of the invention 1810 pro;

videisu'ch' a device wherein means are provice, thesemeans'being concealed from view d "protected from .theweather.

bodied in various devices containingthe 'fprlnc pal features of my mvention.

ertical sectional.- view of a form of device einbodyingmy inventiomthe section being kenongthe line '1-1of Figs?) Fig. 2 is a iff "viationa'l View of the same looking into-one "O f' the "lamp recei-ving sockets;.;Fig. 4 is a wcent ral'vertical sectional view of the same, the section beiiigit'ake'n on'the line 4+4: of Fig. 1, lookingin the direction indicated by tliiehrrows; Fig.5 is. broken elevational J .view of this for'n'i of'the device. looking at 'is a broken sectional view, the section being f takenjon the liii'eb -b of Fig.3, looking in the" ire'ctionnindicated by the arrows; Fig. 7 sectional i view similar to Fig.1 but showing a slightly,di'iierent.form of the device, the-section .being taken on the line 77 of, Fig. -8; Fig. 8 isen elevational view similar to Fig. 3butshowing the form of device Illinois; have invented new and useful Imfollowing is a 'full, clear,-concise, and exact;

incandescent electric lamp" sockets, and park adapted'to carry a plurality of lamps with provision of a device of this class in which allotjtheicurrent-carrying parts are provided{*whereby connection. maybe readily! 'iii'ad'e wi ith supply; wires leading to the de- In the drawings'accompanying this specie catlonJl have shown-my invention emftop'plan' vievvof the sam'eg Fig'. 3 is an elethe'side opposite' that seen in Fig. 3; Fig. 6

view of this form of the device; Fig. 10 is a sectional View, the section being taken on the'line 10 10 of Fig. 7 looking in the directlon indicated by the arrows; and Fig. 11

is a broken elevational view of a further modified form of the device.

Referring particularly to Figs. 1 to 6 inclusive, 121s a hollow shell, formed preferably ofsheet metal and having one of its ends expanded at 13 to form a circular cu shaped chamber and its edge outwar y flanged at 14 to provide a sup orting base for securmg the device to a p ane surface. ThlS flanged portion ,14 is provided with suitable openings 15 for the rece tion of screws or the like for securing the evice in place. At the opposite end of the shell 12 is a cylindrical shell 16 which may be formed of the same material as the. member 12, and secured thereto in any convenient or preferred manner, but preferably by forming the "she11 16 with anopening in its side into which is inserted the end of the shell 12,the material ofthis shell 12 being then flanged outwardly so as to clench the same in place in the'o ening in the shell 16. By this means a rigi wand practically integral structure is;provi 1ed I v The'sheet nietalmenibers12 and 16 are lnthes'e drawings Figure lflis [a central.

coated on oneside; orpreferably on both sides, with a layerof enamelfl'l', this enamel being put on after the parts 12 and 16 have been secured together: Thisenamel coating serves to prevent moisture from finding its way into the devicethrough the joints between the parts, as well as providing a complete insulating coating 'for these parts.

tending across the base, and in this groove 22 lies a contact plate 23. This plate 23 has illustrated in Fig. 7; Fig. 9 is a top plan its ends'bent at a right angle with the main serve as the center contacts for engagement with the center terminals of lamps when the same are inserted into the sockets 19 and 20.

Resting within the chamber formed in the" upper expanded portion of the member 12 is an insulating and preferably circular block 25, this block being provided with channels 26 and 27 in which the leading-in wires are adapted to lie when such wires are connected with the device. Extending through the insulating-block 25 and passing longitudinally through the hollow member 12-'are a pair of bolts 28 and 29, the heads of ,these bolts resting in the channels 26 and 27 in the block 25-. The bolt 28 is screwthreaded upon its inner end and takes'into a suitably screw-threaded opening in the plate 23 which serves to conduct current to the center contacts of the device, as above described. A plate 30 is arranged in the channel 26 and is provided with a bindingscrew 31 and serves to conduct current from thiskbinding-serew to the head of the bolt which ,passes therethrough. The bolt 29 is similarly screw-threaded upon its inner :end and takes into a-serew-threaded opening inl.a. plate 32, thisplate being disposed in a groove 33 provided in the base 18 and havl ing i its ends bent downward and lying'ber tween the base. 18 and the sockets 19 and 20,

thereby electrically connecting these sockets'with the bolt 29. A conducting plate 34 and. binding-screws 35 are arranged in the channel 27 for makingelectrical connection with the bolt 29.

To prevent the base 1 8 from rotating in the shell 16 when lamps are screwed into 'the sockets l9 and 20 I provide an insulating spacing block in,the form of a disk 36 I in the shell 12, this disk 36 having suitable openings through which pass the bolts, 28

and 29. These bolts are thus prevented from coming in contact with the interior of To. prevent the block 36| the, .casin 12.

from wor ing up away from the base 18 I provide a spring 37 which is sleeved on the .bolt 29 and bears at one end against the .block 36, the opposite end of this spring-37 beingseated against a nut 38 on the bolt 29.

a surface .to whichthe device is secured, and

-, ,'current are concealed from view behind the IhWlll be seen that in the device herein above described I have provided a lampholding device in which a plurality of lamps are arranged with their axes extending in the same plane and parallel with a plane that the means for making electrical connection with the source of supply of electric plane ,surface .of the support. The block 25 is preferably circular in form so as to pass readily; into a circularopening in the" wall to' whiclrthe device is secured. This is ofimportance .when the device 13 used in exposed positions such as upon the wall or .shell of a hollow sign or in any 0t er s linilarly exposed posit-ion.

Referring now to Figs. 7, S, 9 and 10, 39 is a hollow cylindrical shell formed preferably of sheet metal and having secured. one of its ends a hollow shell 40. Thfsishefl 40 contains the lamp-receiving socket associated contacts. Upon the other the shell 39 is secureda dish-shaped,

provided'with anTopening into whie t; end of the member 39. These meme and 41 are secured together by flangin' the of sheet metal or the like, this part V end of the member 39 outward so as to lock ate overthe edge of the opening in the'member 41; The member 41 is providedzwithan outwardly extending flange 42 having openings 43 for screws or the like for securing the device to a plane surface. An insulating block 44 rests within the hollow of the member 41' and is provided upon its u with channels per side 5 and 46. A pair 0 olts 47 and 48 extend through the block 44 andpass' longitudinally th'rou h the chamber within the member 39. The olt 47 extends through an opening 49 in the basee50 and is screwed into a plate 51, this plate lying in apassage 52 which extends'transversely through the base'50. This plate filt has, its opposite ends bent at "a'T-ight angledwiththe main body of the plate and parallel witheach other, these ends constituting the center contacts for the device. The sdekets 53' and 54 are secured to the base 50 and are electrically connected with each other by means of a pair of bolts 55 55 which pass transversely through the base 50." The bolt 48 extends through the block 44 and part 39 and is screwed into .a plate'56, this plate resting in a groove 57 formed in the base 50, and having its'ends bent at aright angle with its main-body portion and engaging with the sockets 53 and 54 and making electrical connection betweenthe bolt 48 and the sockets. In the channels 45 and 46 on the block 44 are arranged a pair Tofeonducting plates 58 and 59, tl1ese.-plates being provided with binding screws 60. and 61. The bolts 47 and 48 pass through these plates 58 and 59, and ,whent:supply wires through these bolts with the sockets and the contacts thereof. WVithin the=casing 40, and insulating this casing from the'SOcketS 53 and 54, is "an insulating shell-.62, formed of fiber or the like and. preferably extending beyond the part 40'ateach' end thereof. In

are connected with the binding-screws 60 and 61 electrical connection isuthus made team thistorn the device the insulating coat form of device which is adapted to receive a pair of soft rubber rings 6363. These rings are designed to exclude molsturefrom the'sockets and v other conductmgparts of the device by closing the opening which would otherwise be left between the lamp (i4 and the edge of the lamp-receiving shell. These rings 63 are slightly compressed when the lamp is screwed into place.

Having thus described my invention,what I claim as new and desire to secure by Letters Patent is- I 1. In a lamp-holding device, the combination of a cylindrical shell, a lamp-receiving socket arranged therein, a tubular stem extending from the side of said shell, and having its outer end expanded to form a supporting base, an insulating base in said stem, binding terminals on said insulating base, contacts associated with said socket,

and means extending through said stem for.

electrically connecting said binding terminals to said socket contacts.

2. In a lamp-holding device, the combination of a shell, a lamp-receiving socket in said shell, a tubular supporting stem secured at one of its ends to said shell and having its opposite end expanded to form a chamber, an insulating base in said chamber, binding screw-s 011 said base, cont-acts'associated with said socket, and means extending through said stem for electrically connecting said binding terminals with saidsocket contacts.

8. In a lamp-holding device, the combination of a shell, a lamp-receiving socket in said shell, contacts for said socket, a tubular supporting stem extending from said shell and expanded to form a chamber in said stem remote from said socket, an insulating member in said chamber, binding terminals on said member, and means located within said stem, extending from said binding terminals to the contacts of the socket and electrically connecting the same.

4-. In a lamp-holding device, the combination of a tubular metallic shell carrying lamp-receiving sockets, a tubular metallic stem secured at one of its ends to said shell at right angles therewith, and having its opposite end expanded to form avchamber and further expanded to form a supporting base, an insulating block arranged within said. chamber and carrying means for the attachment of supply wires, and means extending through said'stem for conducting current to the contacts of said sockets.

5. In a lamp-holding device, the combination of a tubular casing carrying a pair of lamp receiving shells," a hollow stem secured at one of its ends to said casing and having its opposite end expanded to form a chamber and further expanded to form a supporting base for said device, and an insulating block arranged i n'said chamber and being of greaterv thickness than the depth of said .chamber, said block being provided with channels extending therethrough for containing supply wires.

6. In a lamp-holding device, the combination of a cylindrical shell containing a pair of lamp-receiving sockets, and a tubular stem having one of its ends secured to said shell and its opposite end expanded to form a supporting base for the device, said shell and stem being provided with a coating of impervious material adapted to exclude moisture from the joints of said device and to provide an insulating covering for said parts.

7. In a lamp-holding device, the combination of a tubular shell having lamp-receiving sockets arranged therein, a tubular stem extending at a right angle with said shell and secured at one of its ends to said shell, the opposite end of said stem being expanded to form a base, suitable contacts associated with said sockets, and means for conducting current to said sockets, said shell and stem' being provided exteriorly and interiorly with a coating of impervious and insulating material for excluding moisture from the oints between the parts of said device and providing insulation for the same.

8. In a lamp-holding device, the combination of a continuous cylindrical tube having alamp-receiving socket in each of its ends, a tubular stem extending from the side of said tube and having its outer end expanded for conducting current from said bindingscrews to said sockets.

9. In a lamp-holding device, the combination of a tubular shell having an insulating base arranged therein midway between its ends, a lamp-receiving socket secured to each side'of said base, a supporting stem extending from the side of said tubular shell and provided with an expanded end for securing the device to a support, and means extending through saigLstem and adapted to conduct current to said contacts.

10. In a lamp-holding device, the combination of a metallic shell circular in crossscction, said shell being expanded to form a chamber near one end thereof and having its edge further expanded to form a supporting base, an insulating base disposed within said chamber and carrying binding-screws,

a second metallic shell arranged at right angles with said first-named shell, lamp-re- In witness whereof, I have hei'eunto subceivmg sockets in said last-named shell, conscribed my name in the presence of two Wittacts associated therewith, and means for messes.

conducting current from the binding-screws REUBEN B. BENJAMIN. 5 to said contacts, said second-named shell Witnesses:

being interiorly coated with insulating ma- M. L. FARRAR,

terial. O. L. HOPKINS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

